Tube connection.



N0. 686,3". Patented NOV. l2, I90l. E. S. LEAYCRAFT.

TUBE CONNECTION.

(Application filed June 26, 1897.) (No Model.)

MATTORNEY MHFM ncmzfs Pn'icas co. moraunio. WASNINGYON n c "I S (WWW/MAGWITNESSES:

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EDWVIN S. LEAYORAFT, OF JERSEY CITY, NEIV JERSEY.

TUBE CONNECTION.

SPECIFICATION forming part of Letters Patent No. 686,311, dated November12, 1901.

Application filed June 26, 1897.

To ctZZ whom it may concern:

Be it known that I, EDWIN S. LEAYCRAFT, of Jersey City, county ofHudson, and State of New Jersey, have invented a certain new and usefulImprovement in Tube Connections, of which the following is aspecification.

The present invention relates to means for securing together twotube-sections or a tubesection with a head or socket, and especially isdesigned to be used in securing tube-sections with their appropriateheads or sockets used in the construction of bicycle-frames. Theinvention is, however, equally applicable wherever it is desired tounite two tubesections or a tube-section and a tube-socket together.

In the drawings I have illustrated a construction embodyingmyinvention,inwhich Figure 1 is a central vertical section. Fig. 2 is aview of .a portion of the parts shown in Fig. 1, showing the same beforethe insertion of the rivet. Fig. 3 is a detailed view similar to Fig. 2,showing the next step in the process of securing the parts together.Figs. 4, 5, 6, 7, and 8 are views showing modifications of thestay-block.

Like numerals of reference refer to like parts throughout the severalviews of the drawings.

Referring to the drawings in detail, in which is illustrated theinvention as embodied in a bicycle-frame construction, lrepresents ahead having a projecting tube-socket 2, which is adapted to receive theend of a tube 3. The interior of the tubesocket 2 is shown asscrew-threaded to engage a thread formed on the outer portion of thetube 3. This form of engagement of the tube-section and tube-socket isillustrated; but it will be understood that any means of bringing thetubesection and the tube-socket together in engagement is within thespirit of the invention.

at designates what I may term a stay-block or anvil, the same consistingof a disk of metal having one or more holes 5 passing diametricallythrough it and having countersunk portions 6 around the ends of. theholes 5.

In assembling the parts I first insert the stay-block a into tube 3 to apredetermined position and. then engage the tube 3, with its containedstay block or anvil, within the socket 2 until the tube section andtube- Serial No. 642,524. (No model.)

or countersunk portions formed around the ends of the hole or holespassing through the anvil and securing the parts by a rivet passingthrough the tube-section and tube-socket, filling the depressions formedtherein by upsetting or spreading the head ofthe rivet therein.

In Figs. 5, 6, 7, and 8 I have shown a modified form of thereinforcing-anvil or stayblock, having a plurality of holes at rightangles to each other.

hat is claimed as new is 1. The combination of a tube-socket, a metallictube-section fitting therewith, a metallic stay-piece or anvil having ahole passing through it, countersunk depressions around the ends of saidhole, the metal of the tubesection being forced into said depressionsand the metal of the tube-socket being forced into the depressions inthe tube-section, and a rivet passing through the tube-socket, thetube-section and the anvil or stay-piece, said rivet being upset orspread so as to fill the countersunk portions on opposite sides of theouter surface of the outer member of the joint, substantially asspecified.

2. The combination of a tube-socket, ametallic tube-section fittingtherewith, a metallic stay-piece or anvil having a plurality of holespassing through it at an angle to each other and in different planes,countersunk depressions around the ends of said holes, the metal of thetube-section being forced into said depressions and the metal of thetubesocket being forced into the depressions in the tube-section, andrivets passing through the tubesocket, the tube-section and the anvil orstay-piece, said rivets being upset or spread so as to fill thecountersunk portions on opposite sides of the outer surface of the outermemberof the j oint,substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWIN S. LEAYGRAFT.

Witnesses: r V

ERNEST HOPKINSON, W. LAIRD GOLDSBOBOUGH.

